Chrysler 300M 1999 Manual page 595

TEST 5A
REPAIRING ALL DOORS FAILING TO LOCK FROM ANY SWITCH
Perform TEST 1A Before Proceeding
START TEST 5A.
REMOVE THE DOOR
LOCK RELAY.
FIG. 1
REMOVE THE DOOR
UNLOCK RELAY AND
THE LF DOOR UNLOCK
RELAY.
FIGS. 2 & 3
CONNECT A TEST LIGHT
BETWEEN CAVITIES 83
& 85 OF THE DOOR
LOCK RELAY CONN.
FIG. 1
STOP THE
ACTUATION.
USING AN OHMMETER,
MEASURE RESISTANCE
BETWEEN TERM 30 AND
87A OF THE UNLOCK
RELAY. FIG. 4
*Perform Verification TEST VER-2A.
WITH THE DRB ENTER
"BODY COMPUTER"
THEN "SENSORS" AND
READ THE DOOR LOCK
SWITCH VOLTAGE.
USING A VOLTMETER,
MEASURE BOTH FUSED
B(+) CIRCUITS.
FIG. 1
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND THE LOCK
RELAY OUTPUT CIRCUIT
(CAVITY 81). FIG. 1
WITH THE DRB,
ACTUATE THE DOOR
LOCK RELAY AND
OBSERVE THE TEST
LIGHT.
USING AN OHMMETER,
MEASURE BETWEEN
GROUND AND CAVITY
79 OF THE UNLOCK
RELAY CONN. FIG. 2
**Check connectors - Clean / repair as necessary.
585
IS THE VOLTAGE YES
ABOVE 0.2 VOLTS?
NO
IS THE VOLTAGE NO
ABOVE 10.0 VOLTS
ON BOTH CIRCUITS?
YES
IS THE RESISTANCE YES UNLOCK RELAY OUTPUT
BELOW 20.0 OHMS? CKTS FOR A SHORT TO
NO
DOES THE TEST
LIGHT FLASH ON AND NO
OFF WHEN THE RELAY
IS ACTUATED?
YES
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
PERFORM TEST
2C.
REPLACE THE
JUNCTION BLOCK.*
REPAIR THE LOCK OR
GROUND. IF OK,
REPLACE THE J/B.*
CONTINUED TEST
5A ON THE NEXT
PAGE.
REPLACE THE
JUNCTION BLOCK.*
REPLACE THE UNLOCK
RELAY.*
REPLACE THE LOCK
RELAY.*
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